CVE-2025-6720

Vchasno Kasa <= 1.0.3 - Unauthenticated Log File Clearing

Published Jul 19, 2025 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Description

The Vchasno Kasa plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the clear_all_log() function in all versions up to, and including, 1.0.3. This makes it possible for unauthenticated attackers to clear log files.

Analysis

Technical impact

A missing capability check inside the clear_all_log function in the Vchasno Kasa WordPress plugin allows an attacker to remove log entries without any authentication. This flaw does not provide code execution or direct access to sensitive data, but it removes the ability for site operators to audit activity or investigate incidents, effectively erasing forensic evidence. The weakness is identified as a missing privilege validation (CWE-862).

Affected Systems

The vulnerability affects all installations of the Vchasno Kasa plugin for WordPress via the MORKVA Vchasno Kasa Integration by bandido. Versions up to and including 1.0.3 are impacted; newer releases are presumed to have resolved the issue.

Risk and Exploitability

The CVSS score of 5.3 indicates a moderate severity. The EPSS score of less than 1% shows that current exploitation probability is very low. The flaw is not listed in the CISA KEV catalog, suggesting no known public exploits. Attackers can trigger the clear_all_log operation remotely through the plugin’s exposed endpoint without authentication, making the exploitation path straightforward provided the plugin is active on the site.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

bandido

MORKVA Vchasno Kasa Integration

unaffected

Version	Status	Constraints
`0`	affected	≤ 1.0.3

No data.

Vendor	Product	Versions
Wordpress	Wordpress	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Update the Vchasno Kasa plugin to the latest version of 1.0.4 or newer, if available
If an upgrade is not possible, disable or uninstall the plugin to eliminate the risk
Restrict web access to the plugin’s administrative functions by applying network or role‑based controls, and monitor logs for abnormal deletion activity

Generated by OpenCVE AI on April 20, 2026 at 20:13 UTC.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-21951	The Vchasno Kasa plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the clear_all_log() function in all versions up to, and including, 1.0.3. This makes it possible for unauthenticated attackers to clear log files.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.425% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://plugins.trac.wordpress.org/browser/mrkv-vchasno-kasa/trunk/classes/mrkv-setup.php#L245
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3328827%40mrkv-vchasno-kasa&new=3328827%40mrkv-vchasno-kasa&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/cd03483a-f46c-4e17-8b58-df87b0ad7fa3?source=cve

History

Jul 21, 2025 6:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jul 19, 2025 5:45 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		The Vchasno Kasa plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the clear_all_log() function in all versions up to, and including, 1.0.3. This makes it possible for unauthenticated attackers to clear log files.
Title		Vchasno Kasa <= 1.0.3 - Unauthenticated Log File Clearing
Weaknesses		CWE-862
References		https://plugins.trac.wordpress.org/browser/mrkv-vchasno-kasa/trunk/classes/mrkv-setup.php#L245 https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3328827%40mrkv-vchasno-kasa&new=3328827%40mrkv-vchasno-kasa&sfp_email=&sfph_mail= https://www.wordfence.com/threat-intel/vulnerabilities/id/cd03483a-f46c-4e17-8b58-df87b0ad7fa3?source=cve
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}`